三通it学院cisco城域接入网络解决方案adsl

Cisco城域接入网络解决方案---ADSL议程思科DSL解决方案概述Cisco6260IPDSL交换机CiscoDSL宽带服务器CiscoDSL网络管理ADSLFunctionalSegmentsCPE—CustomerPremiseEquipmentNAP—NetworkAccessProviderNSP—NetworkServiceProviderCPENAPNSPVideoVoiceContentATU-RDSLAMAggregationServiceSelectionCoreTerminationServiceSelectionEnterpriseInternetISPInternetCiscoGlobalDSL-

新一代业务的基础企业PSTNIP+ATMMPLS家庭办公室、个人用户主要的分支机构中小企业家庭用户IntelCisco600/700/800/1000本地话音业务

可网管的话音和数据VPNs

专线的替代

视频会议VoD

Internet高带宽=多业务=高利润Cisco8001700ISP6400/7400Cisco60006400/740062606015Cisco6260Cisco2600/3600MDU议程思科DSL解决方案概述Cisco6260IPDSL交换机CiscoDSL宽带服务器CiscoDSL网络管理DSL发展历程“IPDSLSwitch”2000IntegratedIPRouterandATMswitchDeliversIP+ATMservicefor

managedIPservices,VoIP/VoATM,and

consumerentertainmentPre-1998DumbDSLAMUBRorframeonlymultiplexerBasicInternetaccessBarriertomulti-service

SmartDSLAM1999IntegratedATMswitchenablestrafficprioritizationNotawareofIPapplications什么是“IPDSLSwitch”?

将ATM交换机和IP路由器集成在一起可网管的DSL服务的基础，支持多种IP业务MPLS和IPSecVPNDSL线路的汇聚WebCacheAware-节省广域网带宽视频娱乐的组播防火墙提供更强的安全性

支持多种DSL多种中继接口运营商级设计MoreIPrichservicescanbeenabledinthefuture•IPMulticastwillallowreplicationattheedgethuseliminatingwastedbandwidth•WebcachingattheSwitchcanreduceinternettraffictrunk•SPcantargetMXUapplicationswithserviceslikeVideoonDemand,Webhosting,Filebackups•“Cherry-pick”theIPservicesbasedonhardwarepotential传统DSLAM应用EnterpriseInternetISPPVCATU-RDSLAMCorePVCPVCPVCOnePVCpersubscriberAggregatedPVC•VCdepletionontheSPaccessside•VCprovisioningdelays•VClimitationcouldrestrictnumberofsubscribers

IPDSLSwitch-AggregatioatattheEdgeATU-R

IPDSLSWITCHMPLSVPNorIPCorePVCAggregatedPVCISPorCorporate•VCaggregationattheIPDSLSwitch•SwitchactsasaPEforMPLScoretoenableVPNservices•ReducesprovisioningdelaysCisco6000IPDSLSwitch

CiscoGlobalDSL的基础DSL铜线网络IP+ATM核心

SVC/SoftPVC

FairSubtendingATMSwitch

PVCCBRUBRVBRSmartDSLAMPriorityQueuesnxE1/T1,DS3,E3,OC3,OC12ADSLG.shdsl,SDSL,IDSLUBRorFrameDumbDSLAM...提供IP和/或ATM的灵活性和扩展性IPMulticastWebCacheAwareIPQoSIPRoutingMPLSPPPoE/A,1483VCTermination运营商级的设计IPDSLSwitchCisco6000IPDSLSwitch产品市场Cisco6015N.A.CO,MDU,DLCCisco6260W.W.CO,N.A.MDU认证ETSIandNEBSETSI

密度24to48线120to240线应用Internet访问商务话音/数据集成IOS,ATM,DSL(ADSL,SDSL,G.shdsl)和网管投资保护产品N.A.CONEBS128to256线Internet访问商务话音/数据集成Cisco6100Internet访问商务话音/数据集成Cisco6260机箱面向国际PTTs,CLECs,MDUs120-240用户线路可扩展的、高性能的ATM结构

1STM-1/OC3,E3,8xE1上联端口 支持CoS/QoS 基于公平机制的级连最多可连接13个

DSLAM,共3,120个用户线路

支持ATM信令(PVC,SVC,SPVC,VPTunnel)

基于IOS的软件运营商级设计and兼容所有的ETSI标准ADSL(CAPandDMT),G.lite,SDSL,G.SHDSL andCiscoDSLManagerCisco6260机箱30xTUC槽位四口模块密度=120端口八口模块密度=240端口两个网络接口模块槽位主用/备用13.5RU23.5in.高，19in.宽

11in.深兼容NEBS标准集成电源模块和风扇系统支持1+1和N+1冗余备份AC/DC电源OC3/OC12,E3,E1WANinterfacePort1Portn155MbpsSTUCCard2ATUCCard1STUCCard3xTUCCardnIPDSLSwitchMultirateDSLADSL/SDSL/G.shdsl/IDSL*Available1HCY00660MbpsCellSwitchFabric1M+CellBufferCisco6000IPDSL交换机体系结构SubtendIFStandard(UBR)Economy(VBR-nrt)Medium(VBR-rt)Premium(CBR)IPServicesMPLS“SubscriberManagement”

4xADSL线路模块支持6015,6160,6260支持线路编码:ANSIT1.413Issue2ITUG.992.1(G.dmt),G.992.2(G.lite),G.994.1(G.hs)动态协商ITUorANSI连接机箱密度:6015-24用户线路6160-128用户线路6260-120用户线路8xADSL线路模块支持6015,6160,6260支持线路编码:ANSIT1.413Issue2ITUG.992.1(G.dmt),G.992.2(G.lite),G.994.1(G.hs)动态协商ITUorANSI连接机箱密度:6015-48用户线路6160-256用户线路6260-240用户线路8xSDSL/G.SHDSL线路模块支持6015,6160,62602B1Q&TC-PAM支持多速率，最高可到双向2.3MbpsATM帧结构机箱密度:6015-48用户线路6160-256用户线路6260-240用户线路NI-2电信级可靠性I/OBoardPHYLayerSignals(backplane)PrimaryNTRPrimarySMBPrimary

DSBPrimaryNI-2PhyIFRef.TimingSwitchIOSProc.SystemFailureSecondaryNTRSecondarySMB2ndDSBxTU-C#1xTU-C#2xTU-C#3xTU-C#30DSB=DigitalSerialBusSMB=SerialManagementBusNTR=NetworkTimingReferenceSecondaryNI-2NI-2STM1冗余备份APS冷备份可在STM1/STM1(中继和集连端口),

E3/2xE3上实现每块NI的端口均连接物理线路可保护集连机箱和独立机箱1+1保护SystemFailurePrimarySecondarySecondaryCardFailureFiberFailureDatapathPhysicallinks/fiber64006400NI-2E3冗余备份1+1保护APS冷备份可在E3/2xE3上实现接口板上的物理链路可保护集连机箱和独立机箱SystemFailureSecondarySecondaryCardFailurePreviouslinkActivelinksI/OBoardSecondary6400NI-2nxE1(IMA)冗余特点Unidirectional,non-revertive,1+1IMAimplementationColdRedundancyisprovidedonE3/nxE1andE1/nxE1(trunkonly)PhysicallinkconnectionsonI/OBoardProvidedforbothsubtendedandsinglenodesSystemFailureSecondaryCardFailurePreviouslinkActivelinksI/OBoardSecondary6400DS3orE3OC-3/STM-1nxT1/E1使多个IPDSL交换机共享同一上连链路Cisco支持两种集连方式菊花链树状结构Cisco在整个集连体系中保证了对上连链路的公平使用集连概念-Subtending集连概述支持最多在每一条ATM上连链路上集连13个节点一个WANDSLAM加12个集连DSLAMsNI模块上最多有两个集连端口集连配置选项:STM-1(OC-3)/STM-1(OC-3)E3(DS3)/E3(2xDS3)DS3/8xT1(E1)(IMA)流量的公平机制和QoS

级连结构-树型TreeTopologyTwoE3/DS3subtendedportspershelfOneE3/DS3WANportatmainshelfUpto12totalsubtendedshelves6260DSLAM6260DSLAM6260DSLAM6260DSLAM6260DSLAM6260DSLAM6260DSLAMDS3/E3WANCentralLocationRemoteorLocalE3/DS3SubtendInterconnectbetweenallDSLAMs级连结构-菊花链DaisyChainConfigurationOneOC3/STM1subtendportpershelfOneSTM-1/OC-3WANonbaseshelfUpto12subtendedshelves6260DSLAM6260DSLAM6260DSLAM6260DSLAM6260DSLAM6260DSLAM6260DSLAMSTM1/OC3WANCentralLocationRemoteorLocalSTM1/OC3InterconnectbetweenallDSLAMs6260DSLAM6260DSLAM6260DSLAM6260DSLAM6260DSLAM6260DSLAMNxE1/T1WANCentralLocationRemoteorLocalnxE1/T1InterconnectbetweenallDSLAMsStarConfiguration(n=1:8)OnenxE1/T1IMAsubtendinterfacepershelfOneE3/DS3ornxE1/T1onmainshelfMaxof8T1/12E1interfacesonmainshelf级连结构-NxE1SubtendingFairness1/4UpstreamBW1/16UpstreamBW1/8UpstreamBWShelfNo.4ShelfNo.3ShelfNo.2ShelfNo.1Parking-lotproblem1/2UpstreamBW1/4UpstreamBW1/8UpstreamBW1/16UpstreamBWCiscoNI-2Solution—ExampleUsingOneQoSQbyShelf

SchedulerLocalTrafficShelfNo.1ShelfNo.4ShelfNo.3EachShelfGetsFairUpstreamBWSchedulerSendsOneCellfromEachNonemptyQueue

BasedonPrioritySchedulerShelfNo.2LocalTrafficLocalTraffic

SchedulerLocalTrafficQbyShelfSubtendArchitecturesServiceSelectionGatewayPSTNVVoiceGatewayNetworkManagementandProvisioningPacketBackboneATMBackboneLECISPEnterpriseInternetAggregationDS3,E3,orOC-3(w/DS3)DS3orE3OC-3/STM-1OC-3/STM-1nxT1/E1nxT1/E1orDS3Upto4IMAgroupspernxT1/E1interface(trunkorsubtend)NI-2功能总结支持扩展ATM服务的ATM交换矩阵支持多种广域网端口集连3,120端口/系统(DSL业务)基于支持冗余备份Console/Cisco

IOS软件和SNMP以太网带外网管端口支持SNMPagent/MIB系统时钟和冗余控制告警中继接口IP交换andMPLSCiscoIOS软件概述基于LightStream®1010软件

扩展版本并在部分功能上有所增强增强的ATMQoS和SVC支持

(UBR,ABR,VBR-nrt,VBR-rt,CBR)增加DSL的调制解调功能支持所有的ATM业务ATMQoS和流量管理PVCs,SVCs,softPVCsILMIandOAM信元MPLSVPNCLI和SNMP网管ATM交换高性能的ATM交换矩阵

1M+信元共享内存三条交换端口组,每条165Mbps

本地端口和集连端口

WAN中继端口

SAR处理器端口660-Mbps交换能力12.8微秒延迟ATMTrafficClasses四个优先队列CoS/QoSCBR—

速率限制业务，需要保证带宽和时延VBR-rt—

时延敏感的话音和视频业务VBR-nrt—

高优先级的数据业务UBR—

低优先级的数据业务EFCI(ABR)—

保证最小流量流量整形-TrafficShaping企业企业个人用户ShapedVP电信运营商整形后的VP

家庭用户每个广域网端口支持最多256条VP支持最多32条VP被整形可以提供统一的ATM服务以保证与公共物理流量一致整形参数最小速率=6信元/秒最大速率=线速最大信元时延=45微秒(最坏情况)MaximumFillAmountandPPDThreshold(Configurable)EPDThreshold

(Configurable+Enable/Disable)EFCIMarkandCLPDropThreshold(Fixedat50%,SelectivelyEnableorDisable)50%Port/ShelfBufferEPD/PPDOffersuser-configurablethresholds

(perVC)EachVCcheckstoseehowitisdoingagainstport-levelbufferthresholdDroppingcanbeonpacketboundaries(EPD,PPD)ifVCisconfiguredforAAL5PVC支持VP和VC交换UNI信元格式(8-bitVP字段)支持硬件寻址支持每个用户线路可设置256条VC支持硬件存表每个系统可设置512K的双向VCSVC支持ITU,ATMForumUNI3.1/4.0SPVC65KVCs/系统256/端口（用户端口）250呼叫/秒IISP(静态)和PNNI(动态)呼叫路由关于带宽管理的呼叫控制用户可以制定相关策略SPVC•SoftPVC-ReducemanualconfigurationstepsofPVCateachhop-Subscriberprovisioningiseasieronsubtended DSLAMs-PVCwithrerouteorretrycapability-SoftPVCwillbeestablishedonlyifneighborsdiscover eachotherPVCSoftPVCPCCPEDSLAMATMNetwork6400NSPNRP1/3210/326260(config)#intatm1/16260(config-int)#atmsoft-vc132dest-addressNSAPaddress10326260(config)#intatm0/16260(config-int)#atm

signallingenable6400NSP#showatmaddress6400NSP(config)#intatm1/0/06400NSP(config-int)#atmsignallingenable6400NRP#intatm0/0/0.1326400NRP(config-int)#atmpvc1032通过IP完成投资保护IPATMVCATM交换CBR,UBR,ABR,VBR(rt&nrt)ADSL,SDSL,G.SHDSL,IDSL

IP路由MPLS边缘LSR,桥接,RBEPPP终结,

IPQoS/CoS

VP当前在DSL交换中实现IP的领先地位Cisco6000

MPLS数据主干信元主干非MPLSMPLSMPLS/VPN:

高性能ATM+IP解决方案

MPLS/VPN减少阻塞并且通过L2TP隧道可以提高网络流量效率，每个DSLAM的每块NI-2模块可以支持50个VPN

通过提供增强业务给现有的和潜在的商业用户可以使电信运营商获得巨大的利润

ATM+IP功能,如MPLS,提供投资保护Howaboutsecurity?•Securityiscomparabletotoday’sATMorFRnetwork.

Whoarethetargetcustomers?•CustomerscouldbeanyenterprisewithalargenumberofremotesitesconnectedtonetworkusingaServiceProvider’sVPNbackbone•CustomersinterestedinreducingthecostofleasedlineconnectivityBenefitsofMPLS-VPNonIPDSLSwitchService

ProviderFutureManagedServices:

MulticastVideoStoredorLiveVideoFeedBroadcastTV(Imedia,Coolcast)Point-to-MultipointVideoFeed(MulticastTransmission)MulticastIP[PIM]SavesbandwidthonthenetworkMoreefficienthost/coreprocessingIntelNIC&USBModemsCiscoSOHO77/78xDSLRouterCisco2600/3600

和ADSLWICCisco1700和ADSLWICSOHODSL

访问小企业/个人用户家庭用户企业分支机构小企业/分支机构商业级的安全性和VPN集成的高质量的话音不同的服务等级业务相关，可管理性，可信赖性Cisco827/828xDSLRouter

Cisco商业级DSLPartnersBridge/

ModemCiscoDSLCPE产品

CiscoIOS单一用户没有安全机制y没有管理非CiscoIOS

CiscoSOHODSL传统Internet访问Cisco600SDSL和Cisco633+routerInternet访问通过数据包过滤和防火墙的安全性CiscoIOS可管理性和可信赖性用户不能通过升级得到增值服务Cisco6000DSLAM功能支持多种DSLANSIT1.413,ITUG.dmt,G.lite,G.hs,SDSL,G.shdsl,IDSL在多POP解决方案中100%适用于各种用户PTTs,DLC/RT,MDU基于标准的市场占有1M+用户自动CPE配置CiscoIOSIP路由可扩展的、安全的MPLSVPN和商业级IP服务Layer3/4支持防火墙,QoS,网页缓存运营商级的ATM交换矩阵支持所有CoS/QoS

公平机制的级连

高扩展性的SVCs/SPVCs以实现动态服务选择基于公平机制的集连方式，提高网络利用率运营商级设计NEBS和ETSI认证可扩展的配置，检错和性能管理议程思科DSL解决方案概述Cisco6260IPDSL交换机CiscoDSL宽带服务器CiscoDSL网络管理宽带汇聚服务平台Cisco6400Carrier-classBroadband/ATMAggregationCisco7200SeriesISP/Enterprise-classBroadbandAggregationCiscoVPN5000SeriesCarrier-classIPsecVPNsCisco10000BroadbandProviderEdgeGateway宽带接入服务器产品定位Performance7200Scalability7200

NSE-1/NPE4006400NRP-26400Carrier-class

14,000

sessionsCarrier-class

96,000

sessions8,000

sessions2,000

sessionsCisco6400

电信级宽带服务器IntegratedATMswitching,PPPaggregation,andIProutingFaulttolerantsystemOIR(hotswappable)12-inchdepth3chassisintelcorackAlarms,relays,andhealthmonitorsNEBSLevel3andETSICisco6400组成Nodeswitchprocessor(NSP)5GbpsATMswitchandsystemprocessor32KVCCsNoderouteprocessor(NRP-1)7200NPE-200classrouter155Mbpsbackplaneconnector(OC-3/STM-1)(NRP-2)Dual7200NPE-300classrouter622Mbpsbackplaneconnector(OC-12/STM-4)Nodelinecard(NLC)OC-3/STM-1,DS-3,and

OC-12/STM-4ATMinterfacesNSPAPEMAPEMBAirExhaust(Rear)AirIntake(Front)NSPBNLCNLCNRPNLCNLCNRPNLCNLCNRPNLCNLCNRPNLCNLCNRPNLCNLCNRPNLCNLCNRPNLCNLCNRPNRPNRP2优势IncreasesCisco6400scalabilityTheflagshipplatformforscalingbroadbandservicesInvestmentprotectionIncreaseperformancewithout

“forkliftupgrade”NRP-2cancoexistwithNRP-1NRP-2硬件特点ScalabilityCapableofScalingupto16ksessions

(8xcurrentNRP)PerformanceOC-12/STM-4ATMbackplaneandGEinterfaceMorethantwicetheforwardingrateofNRP-1ManagementCentralizedinNSPforNRP-2cardmanagementNRP-2硬件技术DualProcessorArchitectureDualRM7000(270MHz)withsupportforupto2x512MBSDRAMIncreasesscalabilityandperformancebyseparatingtheforwardingplaneandcontrolplaneControlplane:creationandmaintenanceofsessionsandtunnelsForwardingplane:packetforwardingandCEFswitchingGigabitEthernet

UsesexistingCiscoGBICtechnologyIEEE802.3zcompliantGBICoptionsSX-500mMMLX/LH-5Kmto10KmSMZX-10Kmupto70KmSM宽带接入服务器-Cisco7200VXRSDH155MPOSATM155MATME1CESDPT622M10/100/1000MEthernetE3E1CE1DDN:nkFR(X25)VOIPDial(MODEM)/ISDNDSL(PPPoE,PPPoA,L2TP)CABLEWireless压缩8,000并发PPPoE会话.支持MPLS/VPN功能SSG7400---7200VXR的新发展7206VXR+NSE-1+I/OwithGE–5PAslots–MIXBus=7400ASR7400ASRBuildsonproven7200technologySamecapabilitiesasaVXRwithNSE-1at1/3therackspaceBuildsonlatest7200I/OcontrollertechnologyforbuiltinEthernetportsandmanagementfunctionsPowerDistributionCisco7400ASR

Rack&Stack3500SwitchBACKPowerDistribution3500SwitchFRONT7400ASR7400ASR7400ASR7400ASR7400ASR7400ASR7400ASR7400ASR7400ASR7400ASR7400ASR7400ASR7400ASR7400ASR7400ASR7400ASR7400ASR7400ASR7400ASR7400ASR7400ASR7400ASR7400ASR7400ASR7400ASR7400ASRServiceBlowerActiveMonitorServiceBlowerActiveMonitorDouble-sidedServicePathHighScalability:Upto40persideHighAvailability:NosinglepointoffailureTrafficsegregationatthebackhaulCisco10000Series

-Overview-IPServicesMostcomprehensivesetofPXF-acceleratedIPfeaturesenablingrevenuegeneratingservicesScalabilityIndustryleadingdensity,multipleformfactorsPerformancePXF-acceleratedservicesdeliverline-rateperformanceCarrier-ClassReliabilityHardwareandsoftwaredesignedfor99.999%availabilityCisco’sIPEdgeAggregationplatformCisco10005Cisco10008Line-ratePerformancewithMULTIPLEIPservicesCisco10000

BroadbandAggregationPhase1programcommittedEFT-CY01Q3FCS-CY01Q4Phase2–targetH1CY02LAC,TunnelSwitching+

2xscalability+moreinterfacesPhase3–targetH2CY02SSG+additionalscalability

+moreinterfacesPhase1–CommittedFeaturesSubscriberAccessLNS,RBE,PTA,RFC2684,RoutedAAA/SecurityRadius,TACACS+,PAP/CHAP,ACLforPPPoEandRBEQoSPer-VCshaping,queuing.PerVCWRED,CAR,CBWFQScalability30K+sessions,30KVCs,8KtunnelsManagementVPDNMIBsupport,Range-basedVCconfigInterfacesAllexisting10000linecards+4xOC3ATMPXF-Accelerated

BroadbandFeaturesAccessMethods

(HowSubscriberTrafficreachesNAP)Layer1-xDSL(ADSL,SDSL,G.Lite,G.SHDSL…)Layer2-ATMLayer3IPTrafficdeliveredviaBridging,PPPorRoutingAccessProtocolsRFC1483Bridging

RFC1483Routed(IPoverATM)

RoutedBridgedEncapsulation(RBE)PPPoverEthernet(PPPoE)PPPoverATM(PPPoA)BridgingImplementationCPE-RFC1483(nowRFC2684)BridgingAggregation/Termination- IntegratedRoutingBridging(IRB)-RoutedBridgeEncapsulation(RBE)Core-UsuallyATM,ifnoaggregationused-WithVCAggregation,typicallyIPorIP+ATMHowdoesRBEwork?SubscribertrafficiscarriedinaBPDUTheRouted-BridgeATMinterfacetreatedasaroutedinterface.Forpacketsoriginatingfromthesubscriberend-Ethernetheaderisskipped-Packetforwardedbasedonlayer3information

ForPacketsdestinedtothesubscriberend

-DestinationIPaddressischeckedonthepacket-OutboundInterfaceisdeterminedfromRoutingTable-ARPtableischeckedforthedestinationMacaddress,ifnonefoundthanarprequestsentoutonthedestinationinterfaceonlyTypicalRBEArchitecture

ATU-RDSLAM6400CoreBridgedCPEBridgedCPEIP=GW=IP=IP=GW=-BridgedTrafficisroutedbythe6400todestinations-6400RBEinterfaceaddressishostdefaultgateway-ScalesmuchbetterthanbridgingSubscribersareindifferentbroadcastdomainsWithunnumbered,subscribersareonsamesubnetsWithunnumbered,needroutestosubscribers(/32dynamicallyinstalledwithdhcprelay)IP=PPPImplementationThreeAccessMethodsfromSubscriber-PPPoA,PPPoE,L2TPClientAggregation-PPPSessionsterminated-PPPSessionsTunneledovertoNSPCore-endtoendATMPVC,PPPterminatedatNSP-IP,ATMorIP+ATM-(L2TP,L2F,MPLS/VPN)HowDoesPPPoEWork?ATU-RDSLAMATM

AggregatorVPI/VCI1/1VPI/VCI1/33PADIPADOPADRPADS(SessionID)LCP/IPCPRFC2516EthernettrafficisbridgedfromthePChosttotheAccessConcentratorPPPoE优点用户广泛接受互操作的标准习惯的拨号用户操作界面缺点需要客户端软件支持缺乏足够的带宽用于组播应用，网络瓶颈，建议次采用分布式方式，需配置多个汇聚设备,RoutingImplementationCPE-CPEinRoutingMode,singleormultiplesubnetbehindCPE-RoutingProtocolSupportAggregation-LearnsSubscriberRoutesthroughRoutingProtocolorStaticRoutesCore-Typically,IP+ATM(MPLS/VPN)ServiceSelectionLayer2ServiceSelectionwithPPP-PTA-MD,PPPoE-OnlySingleDestinationPerPPPsessionLayer3ServiceSelectionwithPPP,Bridging&Routing-WebSelection-MultipleDestinationssimultaneouslyevenwithsinglePPPsessionSSG服务方式SSG支持:-TransparentPassthrough

Service-PassthroughService-ProxyService-Tunnel(L2TP)ServiceSSG特点RADIUSBasedUser/ServiceAuthenticationandAccountingSupportforBridged,PPPoA,andPPPoEsubscribersWebBasedDashboardApplicationIP